Because the B250 is more powerful, components are under more load — so maintenance becomes even more important.

1. Engine Issues

The turbocharged 2.0L engine is strong, but like all high-performance turbo engines, it needs consistent servicing.

• Oil leaks from seals and gaskets – higher engine pressures can accelerate wear in seals over time
• Misfiring or rough running – often linked to ignition coils or spark plugs, especially under load
• Carbon build-up – direct injection engines can develop carbon deposits, affecting efficiency and performance

2. Transmission Problems

The dual-clutch gearbox delivers quick shifts but can become problematic if not maintained.

• Jerky gear changes – especially noticeable in stop-start traffic or low speeds
• Hesitation when accelerating – can indicate clutch wear or transmission adaptation issues
• Gear slipping in higher km vehicles – caused by internal wear or degraded transmission fluid

3. Electrical Faults

With more advanced tech, electrical issues are fairly common across the B-Class range.

• Infotainment system freezing or lagging – can affect usability and connectivity
• Sensor faults (parking, safety systems) – may trigger false warnings or stop working
• Dashboard warning lights – often sensor-related but require proper diagnostics to confirm

4. Turbo & Performance Issues

The B250’s turbo is a key performance component, but it can develop issues over time.

• Loss of power – may indicate turbo wear, boost leaks, or airflow issues
• Whistling or unusual noises – can signal air leaks or early turbo failure
• Increased fuel consumption – often linked to inefficient boost or engine performance issues

5. Suspension & Ride Concerns

With a sportier setup, the B250 can show wear a bit sooner than lower models.

• Knocking noises over bumps – often due to worn suspension bushes or mounts
• Stiffer ride becoming harsh – worn components reduce comfort and handling quality
• Uneven tyre wear – can result from worn suspension or alignment issues